Dishwashing machine



Nov. 7, 933

N. H. HENDERSON 1,934,539

DISHWASHING MACHINE 'Filed July 31; 1929 s sheefs-sheet 1 I NVENTOR MM #hmm NW 7? l933- N. H. HENDERSON DISHWASHING MACHINE 3 Sheets-Sheet 2 Filed Jply 3l, 1929 INVENTQR" N. H. HENDERSON Nov, 7, 1933.

" nsHwAsHING MACHINE 3 Sheets-Sheet 3 INVENTOR Filed July 31. 1929 Patented Nov. 7, 1933 UNITEo sTATEs PATENT?E oFFlcE This invention relates to apparatus in which the dishes may be entered, washed and removed without stopping the washing operation. The

particular object is to make a machine of this type in a small size for installation on a counter or table. Such a machine can be moved 4from place to place when circumstances make such desirable. Since there is no manipulation necessary after it is started except placing the dishes, the operator can be inexperienced. There is also consider- `able advantage in having the water supply and drain pipe arranged for use in connection with the ordinary sink.

By placing the dishwasher near the sink the outlet from the dishwasher can be made to overflow into the sink and the water supply can be obtained from the sink faucet.

In general the machine consists of a rectangular box like receptacle open at the ends and provided with a pump for recirculating the washing fluidv over the dishes. The basket of dishes moves in one end and after being washed is pushed along by the next basket of soiled dishes as the latter is being entered. When the basket of clean dishes leaves the washing compartment it passes between the rinsing sprays which are pui: into operation .by the opening of the door by the operator at the charging end. The door on the outlet end is of some soft material such as canvas and this is pushed open by the basket of clean dishes as it comes out.

As this dishwasher is not made an integral part of the counter or table, the draining from the baskets of both dirty and clean dishes as they enter and leave will not ow into the receptacle from the table top and it is fitted with extensions at either end to catch this drainage. 'I'he extensions are shallow trays but are in fact part of the track or supports for the baskets which extend through the machine from end to end. These extensions are made to telescope or slide into the receptacle when the machine is not running. Al-

though the dishes are shown in baskets they may be as readily washed without baskets and putl in piece by piece.

My invention consists essentially in certain features of the construction hereinafter more specifically described and then definitely claimed.

I wish it understood that the various novel features of which my invention consists can-be organized in other forms and that my invention is not limited to the precise arrangement as herein described and shown or to use for washing dishes only but can be used to wash other articles as Well.

, Fig. 1 is a vertical section of my machine taken on line -1-4 of Fig. 2 looking from the charging toward the discharge end.

Fig 2 is a vertical section of my machine taken on line 5--5 of Fig. 1 showing the tray extensions 6 of the track as broken for shortening.

Fig. 3 is a plan of the machine partly in section taken on line 3--3 of Fig. 2 showing the tray extensions telescoped into the machine. Y

In the drawings, like gures of reference indi- 05 y cate corresponding parts in the different views.

(6) is the box or tunnel like receptacle open at the ends except for doors hinged at the top. 'Ihe door (7) on the inlet end is preferably of metal as shown and the door (8) on the outlet end is 70 preferably of some fabric like canvas.

- The 'bottom ofthe receptacle forms a tank for the washing iluid being partially closed at the ends. The receptacle has connected with it a pump (9) shown as connected to a motor (10). 75 The pump has an inlet (l1) into the receptacle at the bottom and two outlets, one on either side. The outlet (12) is connected to water spray pipes (13) below the track and the outlet (14) is connected to a water spray (15) arranged above the dishes at one side of the receptacle.

The holes (16) in pipe (15) are arranged in pairs each pair discharging at an angle toward each other. The water jets or sprays in striking each other and the top of the receptamle are broken up so that in falling over the dishes all places will be reached by particles of washing uid. Thus the use of small openings in the spray pipe is unnecessary.

The lower spray pipes (13) have removable caps (14). By removing these caps when the pump is rimning, the water will carry out all particles of dirt which are too large to escape through the holes in the pipe.

The dishes are rinsed as they leave the washing compartment by the spray pipes (1'2') arranged above and below the dishes.

`These pipes are supplied with fresh hot water through the valve (18) which is opened only when the charging/door (7) is lifted by the operator. 10) As this occurs when a fresh basket is entered and while the basket of washed dishes is being pushed out the other end the rinse therefore is in one sense automatic and turned on only while the clean dishes are passing out.

The water supply is connected to the pipe (19).

The overow from the receptacle is kept at a constant height by the detachable fitting (20) which is fitted with a loose screen (21) to catch the large particles of food. When it is desirable to drain the dish washer completely this iitting can be removed from the outlet flange (22).

Opposite the upper spray pipe (15) and extending longitudinally of the machine is a bame (23) which aids in discharging the spray where desired.

At either end of the washing compartment are partitions (24) which also aid in discharging the spray when desired and keep it confined to the washing compartment.

The track (25) is preferably made of hollow tube as shown. The tray extension (26) on the charging end is above the track (25) and has a similar tube support (27) fastened to it underneath and this support extends into the receptacle to interlock under the track (25) as a means of support to the extension (26) when it is pulled out into the operating position.

The tray extension (28) on the discharge end is placed underneath the tubes (25) and is supported by rods (29) extending into the ends of the tubes (25). 'Ihese rods extend into the tubes a suicient distance to support the tray (28) when pulled out into the operating position.

What I claim is:

1. In a dishwasher, a casing open at the ends,

a track through the casing, slidable extensions to the track at the ends, Athe extensions being in the form of trays with raised edges on two sides and on the outer end, the inner end normally overhanging the opening into the casing, the trays arranged to telescope into the casing when the machine is idle.

' 2. In a dishwasher, an elongated casing with open ends, the lower part of the casing being a receptacle for Wash water, a track arranged in the casing above the receptacle, a pump arranged to recirculate the wash water from the receptacle over the dishes in the casing, trays slidably attached to the track at both ends thereof and arranged to telescope into the casing, the trays arranged to extend outwardly from the casing and over the edge of the receptacle when in their outermost position, the trays having raised edges on the two sides and outer end and an extension downward on the inside edge, the tray being supported by the track when extended.

3. In a dishwasher, an elongated receptacle for holding washing uid, a track extending longitudinally above the washing fluid, an extension to the track at the charging end, the extension being in the form of a tray above the track, a. supporting bracket attached to the tray and extending into the receptacle to interlock under the track, the extension and its supporting bracket being slidable into and out of the receptacle.

4. In a dishwasher, an elongated receptacle for holding the dishes while they are being washed, hollow tracks extending through the open ends of the receptacle, an extension to the tracks at the end where the dishes are taken out, the extension being in the form of a tray located under the track, the extension having attached to it supporting rods which telescope into the hollow tracks, the tray extension and its supporting rods being slidable into and out o1' the receptacle.

5. In a dishwasher, an elongated casing having openings at the ends for charging and discharging the dishes, a charging door swinging outwardly and hinged along its top edge, tracks for carrying baskets of dishes extending through the machine from end to end. slidable extensions to the track in the form of trays which drain into the machine, a pump connected to the machine for recirculating the water and rinsing means consisting of upper and lower spray pipes controlled by a valve, means connected to said charging door and to said valve whereby said valve is opened when the charging door is opened outwardly.

6. In a dishwasher, a casing with open ends closed by outwardly swinging doors, transverse partitions located adjacent and inside the swinging doors, a longitudinal baiiie adjacent the top of the casing extending between the transverse bafiies and to the top of the casing, a recirculating pump connected at one side of the casing for discharging water into the casing through a spray pipe carrying discharge nozzles directed upwardly, the pipe being located in the upper part of the casing on the side adjacent the pump, the longitudinal baiile being located in the upper part 110 of the casing on the opposite side from the pump. v

'7. In a dish-washer, a casing having open ends, doors mounted in said open ends for outward swinging movement, transverse partitions located adjacent and inside the swinging doors, a longitudinal barile at the top of the casing extending between and fastened to the transverse baiiies and to the top of the casing, a recirculating pump connected at one side of the casing for discharging water into the casing through a spray pipe ca rrying discharge nozzles directed toward the top of the casing, the pipe being located in the upper part of the casing on the side adjacent the pump, the longitudinal baiiie being located in the upper part of the casing on the opposite side from the pump, a rinse spray, a valve for controlling said rinse spray, and means connected to said valve and to the outward swinging door at the inlet end of the casing for opening said valve when the door 130 is swung outwardly.

NELSON H. HENDERSON. 

